Edward hart



(No Model.)

3. HART. ACID BOTTLE.

Pate1 1 tedMar. 18, 1890.

E WINE $58:

. INVENTOB: I am ATTORNEYS.

N. PEI'ERS, Pholomwgnplmr. wuhinm. 0. cu

UN TED STATES PATENT OFFICE.

EDWARD HART, or EASTON, PENNSYLVANIA, ASSIGNOR 'ro HIMSELF, JOHNTowNsEND BAKER, AND GEORGE PURSEGLOVE ADAMsoN', or

SAME PLACE.

- ACID-BOTTLE.

SPECIFICATION forming part of Letters Patent No.' 423,683, dated March18, 1890.

Application filed August 26, 1889.

To all whom it may concern:

Be it known that I, EDWARD HART, of Easton,

in the county of Northampton and State of Pennsylvania, have invented anew and useful Improvement in Acid-Bottles, of which thefollowingisafull, clear, and exact description.

My invention relates to an improved acidbottle especially adapted forthe storing and transportation of hydrofluoric acid in pure condition.This is done at present in leaden or in rubberbottles or othercontaining-ves:

sels made of the same materials.

It is well known that hydrofluoric'acid will destroy glass and willattack both lead and rubber-=slowly, it is true, but still rapidlyenough to render the acid contained in such Vessels useless foranalytical or.other purposes where perfectly pure acid is necessary.

wax, or mixtures of these substances.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar letters and figures of reference indicate correspondingparts in all the views. 4

Figure l is a central vertical section through a mold, illustrating themanner of producing the receptacle; and Fig. 2 is a transverse sectionthrough the mold and the receptacle contained therein. Fig. 3 is asideelevation of the bottle, partly in section, illustrating the position ofthe stopper when the bottle is in use; and Fig. 4 is a similar Viewillustrating the position of the stopper just prior to sealing thebottle for transportation.

Neither of the substances above set forthnamely, animal wax, paraffine,orceresine is attacked in the least by the acid in its pure condition;but animal wax is very expensive, and is preferably not used alone.

Serial No. 321,956. (No model.)

Paraffine is the cheapest; but in order to pre-' vent crystallizationand consequent danger of leakage one or the other ofthe abovenamedsubstances should-be added thereto.

I prefer, however, to use c'ere'sine, as .it melts at a hightemperature.

By experiment I have found that the best mode of constructing the vesselis that illustrated in Figs. 1 and 2, which consists in a moldconstructed in two sections 1Q and 11, having an orifice at the top anda tapering stopper 12, adapted to fit the s'aidorifice. This mold may bemade of plaster-of-paris, metal, or other approved substance, and theinside of the mold is shaped to the exterior of the bottle or receptacleto be cast. The molten material is poured into the mold through theorifice therein and the stopper12 is then fixed to place, whereupon themold is rapidly shaken or a centrifugal motion is imparted thereto,whereby the heated liquid material is forced into contact with theinterior surface of the mold at all points. This rotary 'orreciprocating motion is kept up until congelation takes place. Theresult :is a hollow casting 13, (illustrated in Figs. 3 and/l, forinstance,) which may be made thick or thin at pleasure, according asmore or less molten material is poured into the mold.

The stopper 1 L of the receptacle is preferably made of a like materialwith the body, and consists of abody a, adapted to fit loosely in theneck of the bottle, and an upper flange a, concaved upon the upper face,as illustrated at 15 in Figs. 3 and 4.

In Fig. 3 the body of the stopper is illustrated as inserted in themouth of the bottle or receptacle, and is so'pl'aced when the receptacleis in use. p

WVhen the bottle of acid is to be transported or stored, the stopper isinverted, as shown in Fig. 4, whereupon the flange a of the stoppercontacts With the upper surface of the receptacle around the mouth.

The stopper and the body of the receptacle sealed joint with the body.To open the bota wax body, of a reversible stopper also constructed ofwax, substantially as shown and described. v

v 3. As an improved article of manufacture, an acid-bottle constructedof animal and mineral Wax, substantially as shown and described.

4. As an improved article of manufacture, an acid-bottle constructed ofanimal and mineral wax and provided with a stopper of the same material,as and for the purpose specified. I

5. In an acid-bottle, the combination, with a body constructed of animaland mineral Wax, of a reversible stopper of the same niaterial,.consisting of a body portion and a flange at one end of the same,substantially as and for the purpose'specified.

6. In an acid-bottle, the combination, with the body. constructed ofanimal and mineral wax, of a reversible stopper comprising a bodyportion and a flange integral with one end of the said body, having aconcaved outerface, substantially as and for the purpose 7. As animprovedarticle of manufacture,

a stopper for an acid-bottle, the same being constructed of Wax andprovidedwith a pcripheral'flange, substantially as and for the purposespecified.

8. As an improved article ofmanufacture, a stopper for acid-bottles,constructed of animal and mineral wax, substantially as shown anddescribed. v

EDWARD HART.

Witnesses:

GEO. L. EILENBERG, F. W. EDGAR.

